SICK HISIC450 Operating instructions

SICK
Brand
SICK
Model
HISIC450
Type
Operating instructions
OPERATING INSTRUCTIONS
HISIC450
Overheight Detector
Title Page
Installation
Operation
Maintenance
2 HISIC450 · Operating Instructions · 8011735 V1.1 · © SICKAG
Document Information
Document ID
Title: Operating Instructions HISIC450
Part No.: 8011735
Version: 1.1
Release: 2013-04
Described Product
Product name: HISIC450
Manufacturer
SICK AG
Erwin-Sick-Str. 1 · 79183 Waldkirch · Germany
Phone: +49 7641 469-0
Fax: +49 7641 469-1149
E-mail: info.pa@sick.de
Trademarks
Product names used in this document may also be trademarks and
are only used for identification purposes.
Original Documents
The English edition 8011735 of this document is an original docu-
ment of SICK AG.
SICK AG assumes no liability for the correctness of an unauthor-
ized translation.
In case of doubt, contact SICK AG or your local representative.
Legal Information
Subject to change without notice.
© SICK AG. All rights reserved.
Glossary
Skilled persons: Persons who, based on their technical training
and knowledge as well as knowledge of the relevant regulations,
can assess the tasks given and recognize the dangers involved.
Competent persons: Persons who, based on their technical train-
ing on, and knowledge concerning the specific device, as well as
knowledge of the relevant regulations, can assess the tasks given
and recognize the dangers involved.
Instructed persons: Persons properly instructed on the tasks
assigned, possible risks and necessary protective measures.
HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG 3
Warning Symbols
Signal words
DANGER
Immediate hazard which will result in severe personal injury or
death.
WARNING
Risk or hazardous situation which could result in severe personal
injury or death.
CAUTION
Hazard or unsafe practice which could result in less severe or
minor injuries and/or property damage.
Information Symbols
Hazard (general)
Hazard by voltage
Important technical information for this device
Important technical information on electrical or elec-
tronic functions
Supplementary information
Nice to know
Contents
4 HISIC450 · Operating Instructions · 8011735 V 1.1 · © SICK AG
1For your Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Basic safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Basic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2.1 Detail level of these Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2.2 Scope of application and identification of device version . . . . . . . . . . . . . . . . . . . . . . 6
1.2.3 Designated users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2.4 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Functional principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Special features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Device variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Project planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.1 Installation planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.2 Object detection limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Preparation of installation location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.3 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.5 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.5.1 Manual alignment of transmitter and receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.5.2 Adjustment of light reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.5.3 Adjustment of delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.6 Completion of installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4Signal Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Simple AND circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2 Direction-dependent evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3 Direction-dependent evaluation with error message . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.4 Signal level of outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.4.1 Detection of an object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.4.2 Functionality of alarm output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.1 Maintenance work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.1 Clearing malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8 Technical Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.1 Operating data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Contents
For your Safety
HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG 5
Subject to change without notice
HISIC450
1 For your Safety
Safety information
Intended use
Responsibility of the operator
6 HISIC450 · Operating Instructions · 8011735 V 1.1 · © SICK AG
For your Safety
Subject to change without notice
1.1 Basic safety information
Read and always observe the safety and warning information in these Operating Instruc-
tions.
1.2 Basic information
1.2.1 Detail level of these Operating Instructions
These Operating Instructions contain a fundamental description of the HISIC450 over-
height detector and serve as guide for installation, operation and scheduled maintenance.
They also contain information on safe operation of the HISIC450.
Read and observe the corresponding Sections in these Operating Instructions.
1.2.2 Scope of application and identification of device version
These Operating Instructions are applicable for the HISIC450 as from date code 0807.
The date code of the HISIC450 is to be found on the type plate on the upper sides of the
transmitter and of the receiver.
1.2.3 Designated users
The HISIC450 may only be installed by skilled persons who, based on their technical
training and knowledge as well as knowledge of the relevant regulations, can assess the
tasks given and recognize the dangers involved.
Responsibility of user
● Only operate the HISIC450 according to the intended use (→ §1.2.4).
● Do not use the HISIC450 in potentially explosive atmosphere.
● Follow all specifications in these Operating Instructions and only operate the HISIC450
as described in these Operating Instructions.
● Keep these Operating Instructions for future use.
● Pass these Operating Instructions on to a new owner.
● Do not modify any components on and in the device.
● In addition to the Operating Instructions, follow local laws, regulations and operating
directives applicable at the respective installation location.
1.2.4 Intended use
The HISIC450 serves for the detection of vehicles which are too high at tunnel portals,
bridges, car parks or similar structures.
The device is not a safety component according to the EU Machinery Directive.
WARNING: Danger through defective device
The HISIC450 is likely to be unsafe when it:
● Shows visible damage on the outside.
● Has been penetrated by moisture.
● Has been stored or operated under irregular conditions.
In these cases:
▸
Put the HISIC450 out of operation, separate all connectors from the power
supply and secure against unauthorized start-up.
WARNING: Risks through electric voltages
▸
Do not interrupt protective conductor connections.
Product Description
HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG 7
Subject to change without notice
HISIC450
2 Product Description
Functional principle
Device features
Layout
8 HISIC450 · Operating Instructions · 8011735 V 1.1 · © SICK AG
Product Description
Subject to change without notice
2.1 Functional principle
The HISIC450 overheight detector comprises two photoelectric switches that are installed
at the same height and whose beams run in opposite directions. Two photoelectric
switches are used to reduce false alarms caused by birds, leaves or other objects.
Reliability can be further increased when induction loops are used in addition to the photo-
electric switches.
Some options for the evaluation of the signals of the photoelectric switches are described
in → p. 17, §4.
2.2 Special features
● High light intensity for use in almost any weather condition.
● Resistant to snow, rain and dust.
● Aluminium housing with anticorrosive coating.
● Heated front screens against icing or condensed moisture.
● Largely insensitive to residual light.
● Integrated optical alignment aid.
● Nearly maintenance-free.
2.3 Device variants
● HISIC450-R250
– 24...240 V UC (+10% / –25%)
– Relay output, 10 ms reaction time
– Max. 10 switching operations per second
– t = approx. 0.5...12 s
● HISIC450-P250
– 10...60 V DC (limit values)
–PNP output, 500μs reaction time
– Max. 1000 switching operations per second
– Additional test input and soiling message
– t = approx. 0.015...0.3 s or approx. 0.5...12 s
● HISIC450-N250
– 10...60 V DC (limit values)
– NPN output, 500 μs reaction time
– Max. 1000 switching operations per second
– Additional test input and soiling message
– t = approx. 0.015...0.3 s or approx. 0.5...12 s
Assignment of transmitter/receiver types to the device variants
Device variant Transmitter Receiver
HISIC450-R WS45-U250 WE45-R250
HISIC450-N WS45-D250 WE45-N250
HISIC450-P WS45-D250 WE45-P250
Product Description
HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG 9
Subject to change without notice
2.4 Scope of delivery
The scope of delivery of the HISIC450 includes:
● 2 transmitters (WS45) including fastening screws
● 2 receivers (WE45) including fastening screws
● 4 ball joint brackets made of stainless steel
● 4 hoods for weather protection made of stainless steel including fastening screws
2.5 Layout
Fig. 1 Layout
1Sight slot
2 Reception indicator
3 Ocular for alignment aid (receiver only)
4Operation indicator
5 View-finder lens for alignment aid
6 Reception aperture for infrared beam
7 Attachment thread M6 - 8 mm deep
8 Connection with cable gland
1
5
6
432
87
10 HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG
Product Description
Subject to change without notice
Installation
HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG 11
Subject to change without notice
HISIC450
3 Installation
Project planning
Installation
Electrical installation
Adjustment
12 HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG
Installation
Subject to change without notice
3.1 Project planning
3.1.1 Installation planning
Observe the following when planning installation:
● The distance between the two photoelectric switches (d
1
in → Fig. 2) is normally 1 m.
● Maximum measuring distance (d
2
in → Fig. 2) see → p. 30, §8.1.
Fig. 2 Distances and arrangement of photoelectric switches
● The installation height (upper edge of housing) is equivalent to the maximum vehicle
detection height.
● The two photoelectric switches have to be installed so that the direction of the light
beams is in the opposite direction to each other. This means that a transmitter and a
receiver must be installed on each side of the road (see → Fig. 2).
● Sunlight must not shine directly or via a reflection into the optics of the receiver.
● For photoelectric switches used outdoors, an overvoltage protector must be installed
because overvoltage caused by thunderstorms can not be discharged within the
devices.
● To increase reliability, it is recommended to use induction loops in addition to the photo-
electric switches.
1 Transmitter (WS45)
2 Receiver (WE45)
d
1
d
2
1
1
2
2
Installation
HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG 13
Subject to change without notice
3.1.2 Object detection limits
Minimum object diameter
The prerequisite for the detection of objects is that they fully cover the receiver optical
system of the photoelectric switches for the duration of the reaction time. This implies that
moving objects must be larger the faster they move. The minimum size of an object thus
depends on the speed of the object, the reaction time of the photoelectric switches and the
size of the receiver optical system and results from the following formula:
Example:
– Width of receiver optical system: 35 mm
– Reaction time of photoelectric switch: 500 μs
– Maximum object speed: 100 km/h (
27.8 m/s)
This results in the following minimum object diameter:
If smaller objects are also to be recognized, the width of the receiver optical system can be
reduced to 20 mm by applying black paint (see → Fig. 3).
Fig. 3 Reduction of receiver optical system
Minimum object speed
To trigger an alarm, both photoelectric switches must detect the object within a predefined
time interval. This requires a certain minimum speed of the object below which no alarm is
triggered. This minimum speed depends on the distance between the two photoelectric
switches (d
1
in → Fig. 2) and the time interval.
Example:
– Minimum object speed: 5 km/h (
1.39 m/s)
– Distance between photoelectric switches: 1 m
– Time required for the distance between the two photoelectric switches:
1m/1.39m/s = 0.72 s
This means that the time interval used in signal evaluation has to be 0.72 s minimum.
D
min
= Minimum object diameter
W = Width of receiver optical system
t
R
=
Reaction time of photoelectric
switch
v = Speed of object
The application of black paint reduces the light intensity which could result in a
higher error rate when the weather conditions are bad.
D
min
Wt
R
v+=
D
min
35mm 500s27.8
m
s
------
+ 48.9mm==
35 20
14 HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG
Installation
Subject to change without notice
3.2 Preparation of installation location
▸
Secure the place of work.
▸
Provide electricity for the tools.
▸
Provide jack lift or stable ladder.
3.3 Assembly
Installation work must be carried out only by experienced skilled personnel.
Prerequisite: Suitable masts or similar with the desired measuring height and in the
required distances (see → p. 12, Fig. 2) are available.
1 Install the four ball joint brackets at the desired measuring height.
2 Install transmitters and receivers on the ball joint brackets of the opposing masts and
perform a rough alignment. Ensure that one transmitter and receiver each are installed
on both sides of the road so that the light beams run in the opposite direction (see
→ p. 12, Fig. 2).
3.4 Electrical installation
Prerequisite: Supply line is disconnected from the mains and potential-free.
1 Open the covers of the transmitter and the receiver. Ensure that no dirt enters the
devices.
2 Loosen the cable gland and remove the sealing plug.
3 Route the supply line through the cable gland and connect it according to → Fig. 4.
Fig. 4 Connection diagram
WARNING: Danger through electrical voltage.
▸
Only allow an authorized electrician to work on the electric system.
▸
Observe the relevant safety regulations during all installation work.
▸
Take suitable protective measures against local risks and those arising
from the equipment.
HISIC450-N/-P HISIC450-R
WS45-D
(transmitter)
WE45-N/-P
(receiver)
WS45-U
(transmitter)
WE45-R
(receiver)
1
2
3
4
5
6
10...60 V DC
0 V
TE
1
2
3
4
5
6
10...60 V DC
0 V
Verschmutzung/
Soiling
Q
Q
1
2
3
4
5
PE
L1
N
1
2
3
4
5
PE
L1
N
Installation
HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG 15
Subject to change without notice
The WE45-N/-P receivers have antivalent switching outputs (see also → p. 21, §4.4):
4 Apply mains voltage according to type plate.
Operation indicator on.
3.5 Adjustment
3.5.1 Manual alignment of transmitter and receiver
Alignment aids are integrated in the transmitter and the receiver. These consist of an
ocular with a crosshair through which the opposite device can be seen.
1 Look through the ocular of the transmitter and adjust it to the receiver by swiveling it
horizontally and vertically.
2 Look through the ocular of the receiver and adjust it to the transmitter by swiveling it
horizontally and vertically.
3.5.2 Adjustment of light reception
Fig. 5 Possible adjustments
1 Set the Sensitivity adjusting screw to Maximum.
The reception indicator at the receiver lights continuously.
2 If the reception indicator blinks or does not light, clean or readjust the transmitter and
the receiver.
3 Interrupt the beam path with an object.
The reception indicator must go out.
Connection WE45-N WE45-P
Q
Dark-On switched.
Output is LOW when light is inter-
rupted
Dark-On switched.
Output is HIGH when light is inter-
rupted
Q
Light-ON switched.
Output is HIGH when light is
received
Light-ON switched.
Output is LOW when light is
received
Soiling When receiving signal is too low: Output pulsating 5/s
TE Test input: Transmitter is switched off.
1 Delay mode adjusting screw
2 Sensitivity adjusting screw
3 Time fine adjustment adjusting screw
4Terminal strip
5Switch status indicator
Sensitivity
Rel. off
Rel. on
0,5 - 12s
t
0
t
0
t
1
t
1
t
2
t
2
Sensitivity
0,015 - 0,3s0,5 - 12s
HISIC450-N/-P HISIC450-R
4
3
1
3
5
2
4
1
3
5
2
4
16 HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG
Installation
Subject to change without notice
4 If the reception indicator continues to light or blink, reduce sensitivity at the Sensitivity
adjusting screw until it goes out.
5 Remove the object from the beam path.
The reception indicator must light again.
6 If it does not light, reduce sensitivity until the switch threshold is correctly set.
3.5.3 Adjustment of delay time
Criteria for selection of the delay time → p. 17, §4.
1 Select the delay mode:
– HISIC450-R:
t
1
right: Dark-ON with switch-on delay of 0.512 s
t
2
right: Dark-ON with switch-off delay of 0.512 s
t
1
left: Light-ON with switch-on delay of 0.512 s
t
2
left: Light-ON with switch-off delay of 0.512 s
t
0
: Off
– HISIC450-N/-P:
t
1
: Switch-on delay of 0.0150.3 s
t
2
: Switch-off delay of 0.0150.3 s
t
3
: Switch-on delay of 0.312 s
t
4
: Switch-off delay of 0.312 s
t
0
: Off
2 Turn the Time fine adjustment adjusting screw clockwise/counterclockwise to
increase/reduce the delay time.
3.6 Completion of installation
1 Check the sealing surfaces, seals and threaded attachment of the cover.
2 Position and screw on the cover.
3 Install a hood for weather protection on each transmitter and receiver.
Signal Evaluation
HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG 17
Subject to change without notice
HISIC450
4 Signal Evaluation
18 HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG
Signal Evaluation
Subject to change without notice
The photoelectric switch signals of the HISIC450 can be evaluated via an external PLC (not
included in scope of delivery of HISIC450). This can be performed in many ways. The
description of a simple hardware wiring in → §4.1 and → §4.2 and of two signal evaluation
options by means of PLC in → §4.3 serve as examples.
4.1 Simple AND circuit
This evaluation is advisable only for device variant HISIC450-R.
1 For the first photoelectric switch in driving direction, set a switch-off delay that matches
the minimum object speed (see → p. 13, §3.1.2; recommended are approx. 2 s) (see
→ p. 16, §3.5.3).
2 Set a switch-off delay of 0.5 s minimum for the second photoelectric switch.
3 Connect the outputs of both photoelectric switches in series on the hardware side.
With this evaluation, a reduction of false alarms by direction detection is not possible.
The wiring shown in → Fig. 6 for a light-ON photoelectric switch is a recommended solution
for wire break protection.
Fig. 6 Wiring of AND circuit
3
4
3
4
1. WE-R250
2. WE-R250
Signalspannung/
Signal voltage
Alarm
(=LOW)
Signal Evaluation
HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG 19
Subject to change without notice
4.2 Direction-dependent evaluation
This evaluation can be performed with different PLC methods. As an example, a program is
described in the following which is similar to the contact plan of the “easy” control relay by
Moeller.
In this evaluation, the first signal has to come from the first photoelectric switch, the
second signal from the second photoelectric switch. If a signal from the second photoelec-
tric switch comes first, signals from the first photoelectric switch are suppressed until the
second photoelectric switch is uncovered again and the delay time T2 has expired.
Fig. 7 Direction-dependent evaluation
Row 1: T1 is activated when T2 is not active, i.e. when the first photoelectric switch was
first interrupted.
Row 2: T2 is activated when T1 is not active, i.e. when the second photoelectric switch was
first interrupted.
Row 3: Overheight alarm (Q1) is triggered when I2 is output while T1 is still active, i.e. when
the second photoelectric switch is interrupted before the delay time of the first photoelec-
tric switch has expired.
Rows 4a to 4c: The alarm is acknowledged when the light path of both photoelectric
switches is uncovered again.
The delay time of the photoelectric switches (see → p. 16, §3.5.3) should be set high enough
that the PLC can reliably read in the signals (depending on the PLC used and possibly its
cycle time).
I1 Signal from the first photoelectric switch in driving direction
[1]
[1]Recommendation for wire-break protection: Set the photoelectric switches to light-ON switching,
invert the inputs I1 or I2 of the PLC and connect each with Q
I2 Signal from the second photoelectric switch in driving direction
1
I3 Acknowledgment input
Q1 Alarm output
T1
Off-delay relay for the first photoelectric switch in driving direction;
minimum delay time according to → p. 13, §3.1.2
T2
Off-delay relay for the second photoelectric switch in driving direction;
delay time = some seconds
20 HISIC450 · Operating Instructions · 8011735 V1.1 · © SICK AG
Signal Evaluation
Subject to change without notice
4.3 Direction-dependent evaluation with error message
This evaluation is an extension of the program lines shown under → §4.2. It outputs an error
message when the light beam is permanently interrupted.
Fig. 8 Extension of direction-dependent evaluation
If one of the two photoelectric switches is interrupted for the duration of the reaction time
of T3/T4 without an overheight alarm, an error message is output at Q2 or Q3.
T3 On-delay relay for first photoelectric switch in driving direction
T4 On-delay relay for second photoelectric switch in driving direction
Q2 Error message for first photoelectric switch in driving direction
Q3 Error message for second photoelectric switch in driving direction
I1 Q1 T3
T3 Q2
I2 Q1 T4
T4 Q3
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SICK HISIC450 Operating instructions

SICK
Brand
SICK
Model
HISIC450
Type
Operating instructions
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